Formula 1's rookie driver program kicks into high gear at the Barcelona-Catalunya Grand Prix, with most teams fielding their reserve youngsters during Friday's opening practice. Each team must run rookies for two sessions this season under new regulations, giving emerging talent crucial track time in current machinery.

Fred Vesti steps in for Mercedes in place of Kimi Antonelli, while Ferrari hands Lewis Hamilton's seat to Dino Beganovic. McLaren promotes Formula 2 champion Leo Fornaroli, and Red Bull runs Ayumu Iwasa instead of Isack Hadjar. The spotlight falls on Colton Herta at Cadillac, potentially the next American F1 driver after his IndyCar background.

Williams deploys Luke Browning for back-to-back rookie outings, and Audi uses Alpine loanee Paul Aron. Meanwhile, Alpine, Racing Bulls, Haas and Aston Martin stick with their regular lineups. These sessions provide vital experience for drivers eyeing future F1 opportunities.

The Barcelona track offers familiar surroundings for rookies, having hosted pre-season testing. Sky Sports F1 broadcasts the session at 12.30pm, giving fans their first look at potential future stars alongside established champions.